I had already investigated via the well publicised listings (cheers vf!), hence knowing who the shortcode belonged to :)

Rodger that John. Just needed some verification the stop was part of their opt-out service.

Wasn't 100% given they are good at hiding any mention of an opt-out on their main site other than how their advertising relies on opt-in more so. And appear to resell to agents to advertise the heck out of things.